Employing various metallography methods at high temperature alloy fatigue tests evaluation

• Autorzy: Belan J. , Kucharikova L. , Vasko A. , Chalupova M. , Svecova I.
• Języki publikacji: EN

Abstrakty

EN

Microstructures of superalloys have dramatically changed throughout the years, as modern technology of its casting or forging has become more sophisticated. The first superalloys have polyedric microstructure consisting of gamma solid solution, some fraction of gamma prime and of course grain boundaries. As demands on higher performance of aero jet engine increases, the changes in superalloys micro-structure become more significant. A further step in microstructure evolution was directionally solidified alloys with columnar gamma prime particles. The latest microstructures are mostly monocrystalline, oriented in [001] direction of FCC gamma matrix. All microstructure changes bring necessity of proper preparation and evaluation of microstructure. Except for the already mentioned structures have gamma double prime and various carbides form can be seen. These structural parameters have mainly positive influence on important mechanical properties of superalloys. The paper deals with a microstructural evaluation of both groups of alloys – cast and as well as wrought. Micro-structure evaluation helps to describe mechanism at various loading and failure of progressive superalloys. Such an example where micro-structure evaluation is employed is fractography of failure surfaces after fatigue tests, which are examples of metallography evaluation de-scribed in this paper as a secondary objective.

Słowa kluczowe

EN

Ni-base casting and wrought alloys; gamma prime; gamma double prime; gamma solid solution; light microscopy; scanning electron microscopy; SEM

PL

skaningowa mikroskopia elektronowa; stopy do obróbki plastycznej; mikrostruktury nadstopów; stop; odlew

• Wydawca: Oficyna Wydawnicza Stowarzyszenia Menedżerów Jakości i Produkcji
• Czasopismo: Production Engineering Archives
• Rocznik: 2016
• Tom: Vol. 13, No. 4
• Strony: 11--15
• Opis fizyczny: Bibliogr. 13 poz., rys., tab.

Twórcy

autor

Belan J.

• University of Žilina, Faculty of Mechanical Engineering, Department of Materials Science, Univerzitná 8215/1, 01026 Žilina, Slovakia, [phone]

autor

Kucharikova L.

• University of Žilina, Faculty of Mechanical Engineering, Department of Materials Science, Univerzitná 8215/1, 01026 Žilina, Slovakia, [phone]

autor

Vasko A.

• University of Žilina, Faculty of Mechanical Engineering, Department of Materials Science, Univerzitná 8215/1, 01026 Žilina, Slovakia, [phone]

autor

Chalupova M.

• University of Žilina, Faculty of Mechanical Engineering, Department of Materials Science, Univerzitná 8215/1, 01026 Žilina, Slovakia, [phone]

autor

Svecova I.

• University of Žilina, Faculty of Mechanical Engineering, Department of Materials Science, Univerzitná 8215/1, 01026 Žilina, Slovakia, [phone]

Bibliografia

• 1. RADAVICH J. F. 1997. Electron Metallography of Alloy 718, in: E.A. Loria (Ed.), Superalloys 7X3, 625, 706 and Various Derivatives, The Minerals, Metals & Materials Society, pp. 17-26.
• 2. VANDER VOORT G., MANILOVA E. P. 2004. In: Micros-copy and Microanalysis, S02 (2004), 690-691.
• 3. Information on http://www.georgevandervoort.com /metallography/general/nickel-alloys/20001279-metallography-of-superalloys.html
• 4. RADAVICH J. F. 1988. In: Journal of Metals, 40 (1988), 42.
• 5. SKOČOVSKÝ P., PODRÁBSKY T. 2001. Colour metallography of ferrous alloys, EDIS, Žilina.
• 6. BELAN J. 2012. Study of advanced materials for aircraft jet engines using quantitative metallography, in: R.K. Agarwal (Ed.), Recent Advances in Aircraft Technology, IN-TECH - Open Access publisher of Scientific Books and Journals, Croatia, 2012, pp. 49-74.
• 7. DONACHIE M. J., DONACHIE S. J. 2002. Superalloys – A Technical Guide, 2nd edition, ASM International, USA.
• 8. PINEAU A., ANTOLOVICH S. D. 2009. In: Engineering Failure Analysis 16 (2009) 2668-2697.
• 9. CETEL A. D., DUHL D. N. 1988. In: 2nd International SAMPE Metals Conference, USA, pp. 37 – 48.
• 10. BELAN J., HURTALOVÁ L., VAŠKO A., TILLOVÁ E. 2014. In: Manufacturing technology: journal for science, research and production, 14 (2014) 262-267.
• 11. UHRÍČIK M., SAPIETA M., STANKOVIČOVÁ Z., PALČEK P., ORAVCOVÁ M. 2016. In: Materials Today: Proceedings (3) 2016, 1189-1194
• 12. KOPAS P., VAŠKO M., HANDRIK M. In: Applied Mechanics and Materials (474) 2014 285 – 290
• 13. BOKŮVKA O. ET AL. 2012. Annals of Faculty Engineering Hunedoara – Int. Journal of Engineering, Vol. X, No. 2.

Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.